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Members of A. facilis are generally 1.0-5.0 μm long and 0.2-0.7 μm wide.[1] Under a microscope, they appear as straight to slightly curved rods that occurs singly or in short chains. A. facilis are motile via a single flagellum at one end of the bacterium. They are negative by Gram stain and positive by the oxidase test. When grown on nutrient agar, they form unpigmented colonies.[1] They grow in the presence of oxygen.[1]